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            var minCostClimbingStairs = function (cost) {
                let dp = new Array(cost.length + 1)
                dp[0] = 0
                dp[1] = 0
                for (let i = 2; i < dp.length; i++) {
                    dp[i] = Math.min(dp[i - 1] + cost[i - 1], dp[i - 2] + cost[i - 2])
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                return dp[dp.length - 1]
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